General description The Spring Door Closer is an adjustable surface-mounted automatic closing device designed for doors weighing up to 45kg. Made from durable aluminum alloy with nickel-plated steel parts, it ensures long-lasting performance and ease of maintenance. This door closer is suitable for various settings, including homes, offices, and hotel rooms. Technical specifications Material: Aluminum alloy housing + nickel-plated steel parts Maximum door weight: 45kg Maximum door width: ≤ 1000mm Maximum door opening angle: up to 150° Height difference between door frame and door: less than 5cm Installation Use a metal bracket with a nickel-plated surface for easy installation If the door frame is too high, raise the bracket with additional material to ensure it is parallel to the door frame Usage Ensure the door opens and closes naturally without excessive resistance for optimal performance The spring tension can be adjusted within a certain range to suit your needs